Theoretical analysis of Cooper-pair phase fluctuations in underdoped cuprates: a spin-fluctuation exchange study

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dc.creatorManske, D.
dc.creatorDahm, T.
dc.creatorBennemann, K. H.
dc.date1999-12-03
dc.date1999-12-14
dc.date.accessioned2026-07-07T03:15:24Z
dc.date.available2026-07-07T03:15:24Z
dc.descriptionWe study Cooper-pair phase fluctuations in cuprate superconductors for a spin fluctuation pairing interaction. Using an electronic theory we calculate in particular for the underdoped cuprate superconductors the superfluid density $n_s(T)$, the superconducting transition temperature $T_c(x) \propto n_s$ below which phase coherent Cooper-pairs occur, and $T_c^{*}(x)$ where the phase incoherent Cooper-pairs disappear. Also we present results for the penetration depth $λ(x,T)$ and for the weak pseudogap temperature $T^{*}(x)$ at which a gap structure occurs in the spectral density. A Meißner effect is obtained only for $T < T_c$. We find that phase fluctuations become increasingly important in the underdoped regime and lead to a reduction of $T_c$ in good agreement with the experimental situation.
dc.description4 pages, 5 figures. One reference added
dc.identifierhttps://arxiv.org/abs/cond-mat/9912062
dc.identifierhttp://arxiv.org/abs/cond-mat/9912062
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/30011
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleTheoretical analysis of Cooper-pair phase fluctuations in underdoped cuprates: a spin-fluctuation exchange study
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